Incommensurate superlattice and 90° twist boundaries in the superconducting phase of Bi-Sr-Ca-Cu-O

Authors

C.H. Chen, AT & T Bell Laboratories, Murray Hill, New Jersey
D.J. Werder, AT & T Bell Laboratories, Murray Hill, New Jersey
Sy_Hwang Liou, University of Nebraska-LincolnFollow
H.S. Chen, AT & T Bell Laboratories, Murray Hill, New Jersey
M. Hong, AT & T Bell Laboratories, Murray Hill, New Jersey

Date of this Version

June 1988

Comments

Published by American Physical Society. Physics Rev. B37, 9834 (1988). http://prb.aps.org. Copyright © 1988 American Physical Society. Permission to use.

Abstract

We have observed an incommensurate superlattice structure in the Bi-Sr-Ca-Cu-O system using electron diffraction. The wave vector of the superlattice, q=(0,1/4.7,1), has an incommensurate component along the b axis and a commensurate component along the c axis. Twist boundaries perpendicular to the c axis, across which the crystallographic a and b axes are rotated 90°, are commonly observed in this system.